a scooter converted into tricycle for disabled drivers
 

Spotted this Suzuki Burgman 125 today.

http://3.bp.blogspot.com/-ty_NrPatp_...Photo10232.jpg
http://2.bp.blogspot.com/-ueRxuV-zWm...photo10233.jpg

It had the seat lowered to ease transfer from (or to) a wheelchair, and the footrests were advanced, and it seems like it could ease some streamlining :D

Where do you store the wheelchair once at destination?

I don't know, it's not mine, just took the pictures. But some wheelchair restraint device might be optional. Anyway, some disabled folks just use crutches...