Please how can i save people on the road

POur sugar in the gas tank and stop this fool!. take the keys and throw them away. cut the tires down. call the cops every time he gets on the road. cut wires on the car. do any thing to get him caught!

I agree with KBKY. He has to be stopped and you already know he is not going to listen to you so hide his keys, report him to the police AS SOON as he gets ready to leave. If you know he is leaving, call the police and tell them where he is leaving from, where he is going, and his plate number. Tell them that he is drinking and driving and will not listen to you. They will stop him. I wouldn't recommend you damaging his car if you think he might hurt you for it, let the police handle it. Also, if you do damage his car to stop him (as long as you know he wont get mad and hurt you for it) Make sure you also call the police and report that you did it and why so that he can't press charges on you for vandalism.
You have every reason to be worried and I am happy that you care enough to do something about it.
Anytime you suspect he will be driving drunk, report him to the police ASAP!
I thank you for doing this for all the other drivers and pedestrians out there! You are a great person and don't let him tell you any different!
Good luck to you, let us know if you need anything else!

LISSAC is so right and really give s you the best answer for this!