I still do this

i did this, used to jump my toes with him

It used to be sonic for me

I held my hand up by the window and pretended it was a superhero, flying over or around objects as they whooshed by the window to keep up with us and make sure we were safe. I still do it sometimes.

It was a little gnome for me that used to jump over all the mailboxes and other obstacles. He'd also jump from one to another avoiding the ground.

Mine was an animal... A dog or duck or wolf and it would run along side the car

Mine was Mario and Luigi.

mine was this whimsical blue fire creature when i was little, now it's sans

Saaaaaaaaaaaaaaammmeeee

Mine was someone either riding their bike or hangliding on the telephone wires

I didn't even have a given identity for my entity, but it always rode on the back of the headlights' light

Mine was a ninja

Mine was Mario or Sonic,depending the was i was going through. Now i imagine those things when i'm listening to music in the bus.

OMFG, THIS IS EXACTLY WHAT IS STILL DO
Maybe that's where i started loving parkour

Mine was a spy that was being chased by the bad guys!

I thought of a horse and imagined i rode him and we crossed impossible obstacles together

I do this, but I imagine that the car is the "man" and the light poles extend onto the road and I have to jump over them with the car. I freakin drive for like two hours a day, it gets on my nerves but I can't stop since I've always done it

What do you mean "imagined"?!?!

Um...i do that...a lot,..