What a bike

I went for petrol this morning and at the petrol station I saw a bike similar to one some days before. The bike was unusual in that it had a petrol engine fitted. I asked the guy if I could take a picture and he said yes and with that he came out to explain that he makes them but this one is his own the rest he sells. The bikes he makes sell for about 500€ and the ones he sells go over 50kilometer per hour and 500€ for such a nice machine is money well spent and they do look fun to ride.