Modern Vespa

I had a Puch moped years ago with this layout
This take away bike has a bunch of battery capacity 50ah + 12ah at 48v
I'm not sure hopping it up would be as easy as pulling the restrictor out of the carb, drilling the baffel & advancing the ignition
https://www.aliexpress.com/item/1005003318660505.html?spm=a2g0o.detail.1000014.2.4b942b81LMeoJ0&gps-id=pcDetailBottomMoreOtherSeller&scm=1007.40050.274735.0&scm_id=1007.40050.274735.0&scm-url=1007.40050.274735.0&pvid=6e049b22-3f24-4b4a-aa95-de7801762a8f&_t=gps-id:pcDetailBottomMoreOtherSeller,scm-url:1007.40050.274735.0,pvid:6e049b22-3f24-4b4a-aa95-de7801762a8f,tpp_buckets:668%232846%238113%231998&pdp_ext_f=%257B%2522sku_id%2522%253A%252212000025186871073%2522%252C%2522sceneId%2522%253A%252230050%2522%257D&pdp_pi=-1%253B1129.9%253B-1%253B-1%2540salePrice%253BUSD%253Brecommend-recommend

love that pic that is trying to show it racing along while the stand is down

Here's even more range, with piggyback shocks on the rear
Less weight, but smaller hub motor & even more range
https://www.aliexpress.com/item/1005003624649559.html?spm=a2g0o.detail.1000014.22.4b942b8163uTUe&gps-id=pcDetailBottomMoreOtherSeller&scm=1007.40050.274735.0&scm_id=1007.40050.274735.0&scm-url=1007.40050.274735.0&pvid=7695b031-0b29-4709-ac15-f295029d59b6&_t=gps-id:pcDetailBottomMoreOtherSeller,scm-url:1007.40050.274735.0,pvid:7695b031-0b29-4709-ac15-f295029d59b6,tpp_buckets:668%232846%238113%231998&pdp_ext_f=%257B%2522sku_id%2522%253A%252212000026550687929%2522%252C%2522sceneId%2522%253A%252230050%2522%257D&pdp_pi=-1%253B1079.0%253B-1%253B-1%2540salePrice%253BUSD%253Brecommend-recommend

Hop ups would be bigger wire & higher/volt amp controllers, until the windings melt
Maybe add a second hub motor in the front...

Love that it has a center stand, few of the ebike do.
The small platforms for you feet, will result in grinding a pedal in a corner
I had fitted my Puch with a 1 foot square of fiberglass strapped under the tank for splashing through puddles in NOLA

Here's a shafter with regen
https://www.aliexpress.com/item/1005003639936127.html?spm=a2g0o.detail.1000014.6.5e556b36iEUogW&gps-id=pcDetailBottomMoreOtherSeller&scm=1007.40050.274735.0&scm_id=1007.40050.274735.0&scm-url=1007.40050.274735.0&pvid=0467e82e-6f05-4bcd-8193-2c672f9d652e&_t=gps-id:pcDetailBottomMoreOtherSeller,scm-url:1007.40050.274735.0,pvid:0467e82e-6f05-4bcd-8193-2c672f9d652e,tpp_buckets:668%232846%238113%231998&pdp_ext_f=%257B%2522sku_id%2522%253A%252212000026703934583%2522%252C%2522sceneId%2522%253A%252230050%2522%257D&pdp_pi=-1%253B858.83%253B-1%253B-1%2540salePrice%253BUSD%253Brecommend-recommend

probably handy on a bike that is designed for couriers to keep cargo level-ish when parked

I see that it is described as "a professional electric bike." That's good - you don't want to mess with those amateur e-bikes. I bought an SSR Trail Viper from a motorcycle dealer (big multi-brand place) just over 6 years ago, and the bike is still going strong, has held up well. I did replace the battery just over a year ago ($260 as I recall). I ride the bike most days for my morning exercise. It is a folding fat tire bike, not like one of these being promoted as a delivery bike.

Mine has a 350w hub motor, 36v. It is good for 30 to 35 miles on the Level 1 pedal assist. I wouldn't consider it "a moped," but I have been happy with it as an e-bike. When we bought ours 6+ years ago, seeing another e-bike out and about was a rarity. Now, they are everywhere. I rarely take mine out on roads and mix it up with traffic; I have, but you have to know that (even with a flashing red light on it) you are a likely candidate as road kill. Ours are great riding around our island (15mph speed limit that most people ignore), in RV parks, and out on bike paths and trails.

The right tool for the job. An Italian restaurant on South Padre Island bought a couple e-trikes for food delivery. Turned out to be a failed experiment, as different people riding them didn't keep them charged, so the batteries were often discharged when needed.

I rode my motorcycle through an upscale neighborhood this weekend, and I saw scads of people out on e-bikes. Popular item right now.

My Trek e-bike has over 10,000 km on it. That's about 6,000 freedom-units of distance. The trek will do over 100 km on a charge.

I also rock one of these cheapo electric fat bikes that's good enough for light trails. This will do about 80 km on a charge (50 miles).

Both ranges are we me doing a good amount of pedaling.

Where is this 500km downhill road?