A favourite trick of mine when I'm being tail gated (only works during the day) is to turn the headlights on and accelerate at the same time hehehe
The person behind sees the lights come on and they think you're braking, so they jump on the brakes, but you're actually accelerating with the headlights on hehehe
Nah I hate tailgaters, but honestly, theres no need for anyone to be in so much of a hurry to get somewhere.
Leave 5 minutes earlier... if it's really an emergency, then call the emergency services.
Remember, it's better to arrive late, because the other option is not arriving at all, because you're dead, or the car is written off.