You'll be fine. Just put down the 2nd row of seats and push it more towards the center of the car and you will be good to go. Just take it easy on the drive home. If your SLS is functional as well even more-so.

__________________
2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k