Bluetooth from an regulations point of view has the same power limits as wifi (it's in the same 2.4 Ghz ISM band). In practice Bluetooth devices are small which

Bluetooth from an regulations point of view has the same power limits as wifi (it's in the same 2.4 Ghz ISM band). In practice Bluetooth devices are small which limits both antenna size and desired power consumption so they tend to operate at a shorter range. If one end is a car, which has none of these limits, and the other end is a phone with a reasonably well designed antenna, you can get decent range.