Its nice ho get a sensible answer when you get some perculiar ones on this site!!
I think to an extent you are right. If you suddenly get in a car wearing high heels you are not use to the angle is different and control is harder. However I have worn heels for a long time and are use to this. I find if I can walk in a heel I can easily drive in them. My car is an auto which hepls though. I do remember the first time I tried on a pair of heels it did feel strange and took practice to walk but I am use to that now. Just for your info I do drive in flats sometimes!!(pumps/trainers) too,