Found this on the November 2015 car rental thread:
"This has been rehashed over and over again on Disboards. The VROOM VROOM Limited code was a code, intended for
international visitors only to the US when Vroom Vroom Vroom was still an Australian company. It includes full insurance. Check your confirmation, both CDW and SLP are selected and cannot be un-selected.
The reason why this is bad for American licensed holders is because you cannot take off the included insurance and it supersedes any other insurance you might have including personal/credit card. If you by any chance get in a accident, Alamo will investigate as they insured the car. They will find from your license you are a American citizen and thus the contract will be null and void due to fraudulent use of a code whether knowingly/unknowingly. You will then be responsible for any damage and/or liability to any injured parties out of pocket.
So ask yourself is the risk worth it over saving a
few dollars. With the way people drive in the US and road rage abundant, I would say no. Here's a link to the last reported attempt to use it. They were caught and got lucky.
http://www.disboards.com/threads/vroom-vroom-code-with-alamo.3380580/#post-53104469
BTW there is a version of Vroom Vroom for Americans without the insurances included. You must book through the vroom vroom site.
www.vroomvroomvroom.com"
Back to looking for other deals I guess