That link to the Reiss Muller bike up top would not work, but those things are about £6k for 1250 watts..... That's insane. Get a motor bike license and drive it sensibly if you want to go at 28 miles an hour. 1250 watts is less than 2 hp. I will happily sell you my old 125 which is 11 hp, does 125mpg and will cost you bugger all. You can have it for £600 . It needs an mot but will esily pass and it has been a great little work horse. I did 7000 miles on it and ran it on full synthetic oil, changed every thousand miles. It only need a litre, so why not. It has 17000 miles on it and will do 80,000 if ridden sensibly and given regular oil changes. It is old at 23 years, but it has spent ears locked up in garages. I don't ride it now, preferring my other motorbikes. Bring a van and £600 and it is yours. Car tax about £19 and for me the insurance was so chap I can't even remember what it cost. It has been sorned for about 2 years here.