Sorry I should have posted this earlier, but this FREE event is happening this weekend. You get to drive quite a few vehicles (including BMWs) to compare them against several Cadillac models. I'm not sure what the setup is, but some have setup autox courses and some let you drive onto local streets.

Me and a few friends have signed up for Sunday 10am and afterwards the culinary experience starts at 11:30a.

http://www.cadillacchallenge.com/