neighbor's flood light causing problems

[Benz300]

The over protective wierd neighbors recently put on a garage door light, the two bulbs pointing in opposite direction infront of the garage doors, with a sensor. the problem is the bulbs are probably a 1000 watt each and they have them pointed away from their own drive way directly towards our drive way where we park. at night when I park the car, the sensor ( they have that pointed towards our drive way as well.. yes i know they're wierd), turns on that flood light and literaally blinds the person who is driving trying to park the car.
I dont want to be impolite, but it's becoming a concern. Given that it's their property where they have the lights mounted, what can be done in this instance ?