you can get dongles for most bikes and most hub drives you can change the speed limit in the displays if you have the code 12345 lol.
https://www.ebay.co.uk/itm/114868415531?hash=item1abeb0ec2b:g:vYMAAOSwTtpg2B3J
if you get the programme cable that will do 30-40mph and have a throttle if you want.