Nevada Permit Test 2 Question Tanks have high centers of gravity, which means: Answers They get very good gas mileage. They are easy to roll over. They are very stable. They are easy to steer. Explanation Tank vehicles have high centers of gravity, which makes them vulnerable to rollover. Answer Statistics 1.12 % of our users get this question wrong. This questions is relatively Easy. Nevada Permit Test This questions appears in the following tests: South Dakota Tank ,