Expensive but efficient is what I'd say.
Clean your car quickly and get it dried by staff there too. You can choose th package or a simple wash if you are on a budget. Peak crowds during summertime, but they still keep it moving (although you can still be there for a while). Any type of car can do well here. You have to exit the car and walk around through the building, pay, and get your car by the dry area, so don't go if you have guests in the car who can't get out, as they can't ride through!