I don't know of any, there probably are some rentals that would work. Perhaps just to the Mexican/Belize border though.

You might consider the bus. They run very frequently, are modern, clean, have movies, very cold air conditioning, and they're cheap and easy. The bus station in both Cancun and Tulum are right downtown.

It's an easy bus trip from Tulum to the border. From there you can catch another bus across the border or take a cab, or arrange a transfer.

From the northern border town of Corozal, you can fly straight to San Pedro on Ambergris Caye in 20-30 minutes.