As seen on uk.legal
Someone is selling two stroke petrol engines for MTBs, and MTBs with
engines on ebay. From the feed back, the seller appears to have sold at
least a few dozen, many of which are to people who appear to be in this
country.
I wonder how many of the purchasers who put one of these on a MTB will
make the bike fully road legal, and register it etc.
On a similar note, I have noticed a lot of electric bikes[1] in Bristol
lately, at least four of which I regularly see used, or locked up in
various places.
[1] Which should be road legal.