The scale of the landscape is similar to the vast regions in Russia where you can drive for hours without seeing a soul. The wide open spaces are the best part of the trip, but you'll spend a lot of time moving between the different natural landmarks. Sticking to the main highways is easy enough, but the real scenery is often tucked away on the gravel trails in Kazakhstan. You can find plenty of options for a rent a car in Kazakhstan here
https://getrentacar.com/en-US/kazakhstan . This platform lets you pick out a specific model from local owners or fleets. You can compare the daily rates and check all the details before you arrive. It is a solid way to ensure you have a ride ready for the journey.