noroad:
Another option that i have used a few times is https://turo.com The advantage is you can select the exact car you want. I have used Turo to rent a nice convertable Mustang in Hawaii and recently a very cool lifted Jeep for a month on a four state roadtrip in the US. Obviously there is less "support" available if something goes wrong but I have used this app without any problems at this point. Make sure you look at the total amount in USD though to compare with conventional rental.
Jeep in The Mojave :-)