well bro as per my knowledge, these cars have Air Suspension through which the height of the cars can be adjusted anytime within ones requirement i presume. M not sure about this. Here are a couple of videos of such cars riding low:
//youtu.be/http://www.youtube.com/watch?v=bSQWPgT8KNY&feature=related
//youtu.be/http://www.youtube.com/watch?v=VWDTSTCN1yQ&feature=player_embedded