Other Car Rental Programs/Partners (ie. Alamo, Enterprise, Sixt) - Have a new liscence. Can I rent in California?

Hi, nice forum. Hoping some of you can help me with this.

Iv'e just got my driving liscence at 23 despite having 5 years of driving experience witha provisional liscence. (Due to Irelands appalling driving test waiting times..18months!). Is there anywhere in California that will rent a car to me? Or any rental company in general. I'm really desperate to do my own Sideways style roadtrip.
Thanks.

I'm presuming you have an Irish license. I guess California does allow NRAs to drive around on their international license. To be on the safer side, you might want to grab an International Driving Permit (IDP).
Why 'Sideways'? You're still not into your late 40s! :)

Yeah its an Irish licence. Whats an NRA?