Don't forget your sewing machine manual/instruction book. BTW I always take a machine if driving, other times at Lake Tahoe, I made arrangements at a quilt shop to use one of their floor machines for a few days. I bought a lot of fabric from their store so they were happy. They let me use their classroom with lots of tables and space to work.
In the afternoons, I walked around the lake area, it was beautiful! I load my sewing machine and "stuff" in the car everytime we are going on a road trip. I have never had a problem with carrying my machines.