Yes, please use the best of care while driving.  Remember, before you let anyone into your car, ask them these simple questions:
- Do you have any warrants?
- Are you carrying any drugs or weapons?
- Are you under the influence of any narcotics?
Then proceed with a pat-down to verify that they are indeed unarmed and not carrying drugs. 
Secondly, always drive with your drivers license on your person, and the registration and proof of insurance in your vehicle.
But above everything, please use the utmost of care while operating a motor vehicle on public roadways.
Last and not least, CONGRATULATIONS!!  
  Enjoy driving!  Especially when you don't have to pay for all of it (assuming you don't, if you do, I'm sorry 
).