cars on roads

We also forgot:

Witch Marge on her broom
Carl on his pogo stick

These aren't on the roads, but...

Artie in his helicopter
Santa Homer flying the sleigh

Hey neighboreeno Roshi, decent points; I did mention the aerial activity, but Pogo Carl is indeed another one for the list 8)

& again, hopefully the complete: 
Only drivers allowed in Springfield:   
•Moto-Mindy & Father Sean  
•Choo-Choo Lovejoy   
•Bicycle Martin  
•Smithers Burns Biker-cise   
•Cool Homer Fixie  
•Ned Snowmobile  
•Skateboarders   
•Disco Stu Rollerskating  
•Mr Teeny skating 
•Sideshow Mel Roller-Juggle 
•Duffman Rollerpromos  
•Bart Stampy-ride  
•Luann Van Houten Megaglobe  
•Rich Texan (stationary) Bronco-Ride 
•Pogo Carl
•Mr.Plow!

Don't forget about Burns dino-riding the Blue Haired Lawyer

I just remembered one

Bart and kang task where he does his E.T. ride.

I want this list to be complete :)