of course any race can
Yes you can but you have to get an international drivers licence.
Yes
yeah if you get it registered, but that would cost you like $15000 minimum
Yes, a US citizen can legally drive a Mexican-plated car in the USA for a limited period of time, typically up to one year. However, the driver must comply with certain regulations, such as having valid insurance and registration from Mexico.
Legally to drive a moped in the US you have to be 16. No licence plate is required.
you have to be 16
you drive their
Yes, you need a valid US driver's license to legally drive in the US.
yes you can
three months
yes you can drive but it is harm to have the car without the owner
If you rent a car in the US it should come with all insurance required legally in the US. The car rental company may sell additional insurance. You could probably find a UK insurance company to do this but it would be more expensive and not necessary.