1.
A ~ car is one which you hire and drive yourself. (BRIT; in AM, use rental car )
Any holiday in the USA and Canada is enhanced by renting a ~ car.
ADJ: ADJ n
2.
A ~ holiday is one where you drive yourself to the place where you are staying, rather than being taken there by plane or coach. (BRIT)
...the growth in popularity of ~ camping holidays.
ADJ: ADJ n