Which german car has the feature to start the engine by holding the brake and tapping it's metal steering whee?

-Which german car has the feature to start the engine by holding the brake and tapping it's metal steering wheel?



I was a valet attendant when i was in high school and parked this awesome car. I'm 24 now and would like to find that same car and own it.



I believe it was a benz or bmw, but I can't find any car with that feature. The feature's name is also welcome...



Thanks!!!some cars now do not need any keys to start the engine. there is a kind of button where you just press it to start the engine OR a switch to turn it on. i am using the keyless engine starter car though it is not a German made.