As with any other air mattress you will find, deepsleep is the same thickness throughout and will follow the incline of the car floor. Most sleep unbothered by the slight incline, but here’s some tips if it’s really getting your goat:
-Park as level as possible or with the nose of your vehicle downward if the (terrain allows) to compensate.
-You can use recovery boards (like MAXTRAX) or rocks around the area to park on strategically and help level out the back of the vehicle to your desired angle.
-Place a rolled-up blanket or yoga mat under the end of your mattress to help level.
-If you car camp often you may consider building in a simple, low profile platform to create a perfectly flat surface. (You’ll find an endless supply of DIY inspiration by YouTubers for this, lol).