The Mercedes Collection line offers a perfect rearseat case for traveling. Given the small amount of trunk room....especially when the roof is down...this built-to-fit case is great. It can be placed in the car or removed from the car whether the roof is up or down. If down you just lift it out. If the top is up you slide one of the seats forward and pull it out.
For extra stability the two in-car straps can be used to secure it