Wah say steady bro! Like your guts man! Got a hard on just by reading your reply.
My experience not as "heong" as yours. Best i have done was made my wife go topless while i driving her home at 9pm or so. Expressway no kick at all cos there were no traffic lights for the car to stop. The exciting part was when i reached her neighbourhood. 4 to 5 traffic lights in all and i had to stop my car. Wife wanted to wear back her clothes but i threw all to the back of the back seats. So she LL.
At the last traffic lights to her home came a motocyclist and he stopped right beside my car. My wife panicked and i told her the more she tried to move, the more likely that motocyclist was gonna see her.
Well, cut the long story short, we did it in the carpark.