nope...sorry car time is a waste..kids strapped down, no freedom to move or interact with much, almost as much of a waste as sending em to school to be restrained in a seat all day.....
However I do recommend my husband avoid 'gunning it' just for the sake of getting all the way up to that red light/traffic jam/stoplight or whatever. slowly but steadily we make it all the way up to a nice comfy safe speed. So long as the car is well under control I don't complain.