This site which has a stock of images like this doesn't have any with a bicycle that could be adapted sadly and making a "clean" version with a blank background to drop in your own bicycle would be virtually impossible.
Do you think even with the 2-pin plug it would be acceptable for the UK, if you could just take out the car and put a bike in?
Yes, of course it would....I dont think anyone is going to take offence over how many pins our plug has .........well....hopefully not.....mind you......
Lynda