Blessed the car
Having some good ol' sex in your new car is considered blessing it. You can do it on the bonnet, in the front or back seats, or even in the boot if you're dwarven.
"Me and Andy blessed his racecar last night in hopes that it would bring good luck"
"My girlfriend and I blessed the car when we went to the drive-in movie last night, it was so good"
"My girlfriend and I blessed the car when we went to the drive-in movie last night, it was so good"