Contactless RFID long range (further than 1 m) readers and tags (cards) are usually used in vehicle tracking systems, transport enterprises and parkings.
Longer range is achieved by use of UHF frequencies - 868 MHz or 2.4 GHz as well as point to point antennas and use of active tags with built in power source (usually lithium batteries) for use during 3-5 years. A longer range of reading speeds up the registration and is more comfortable for the driver (no need to open a car window), but there can be possible problems, too - a toll bar can open in front of the car without an access clearance when the car behind it with the clearance may not be allowed in.
Tags (identificators) of the car can have rugged design with a mechanical protection and possibility to install on metal surfaces of a vehicle. In such case they are attached to outer side of vehicle body. A plastic card is usually in with a driver and it can be used to enter the premises with one car, but leave it with a completely different car.