MB allowed us to test drive the GLK, Porsche with the cayenne and Lexus RX (fewer months ago for the RX)....
BMW and AUDI doesn't have a test drive unit yet for the newer arriving models yet...
like the q5, x3, x5

for the cayenne you have to go to PGA for the test drive, but MB and lexus will pick you up at your residence and bring you back after an hour or so spin... but enjoyed most with the cayenne... but IMO MB still has the most comfy ride... my wife almost slept during the whole session.