The only racecar I've ever sold I never got a title for and the buyer never asked.

My dad's racecar DOES have a title and was street driven until 2003 or so, then we got serious and they started smog testing here, so we put a fat exhaust on it and I stripped some of the light wiring out of it. Horn still works though! Real handy for track days and passing newbies in tricky corners.