A lot of the old CPs were ~23.5"-24", and
hanaho's hotrod is 24" too.
It's doable, but a lot of people here feel it's too small.

IMO, a lot of it has to do with how "big" you and your friends stand. Legs spread, elbows out, shoulders square, full grown territorial adults of course require a bigger space than 11 year old kids with skinny shoulders who keep their elbows close to the body.

Also, how close you put the buttons to the sticks and to each other will effect how close you'll have to put player 1 to player 2. IMO the hotrod is an okay distance apart.
I'm going to sound a little old, but get a friend and stand in front of the cab pretending to push buttons and wiggle the stick. (Or better, cardboard test the layout with real stick & buttons.) Be sure to try both players positions. See if it's "too close" for
you (well, and maybe your friends).
If you aren't too territorial, and you don't spread the buttons too much, I think 6"-8" will be fine. [ducks head] Some people want 12"-16"
