Looking on the internet deeply has found these results:

be in car is the most popular phrase on the web.

be at car 1200,000 results on the web	be in car 111,200,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Okay, I'll be at the car. Anyway, the point is there's going to be a car at it I wanted to show you. Can't we just go the other way and be at the car? In Britain there will be 1.3 million cars at least still on the road in 2000 that were designed to run on leaded petrol. I will be back at the car in ten minutes. mostly sponsored by energy companies The numerous new types of electric cars and scooters Shouldn't you guys be throwing water balloons at cars right now?	Approximately ten per cent of lead production is to be found in cars, but also cadmium, chromium, mercury and other very dangerous substances. I could be in that car he bombs. Okay. I'll be in the car. People will be in cars, cursing his name. He even knew you and me would be in this car. I'm supposed to be in car 564. Clean fuels allow modern technology to be used in car engines, which will likewise lead to a substantial reduction in fuel consumption. Keith wasn't supposed to be in the car.

be at car

1200,000 results on the web

be in car

111,200,000 results on the web

More popular!

Okay, I'll be at the car.
Anyway, the point is there's going to be a car at it I wanted to show you.
Can't we just go the other way and be at the car?
In Britain there will be 1.3 million cars at least still on the road in 2000 that were designed to run on leaded petrol.
I will be back at the car in ten minutes.
mostly sponsored by energy companies
The numerous new types of electric cars and scooters
Shouldn't you guys be throwing water balloons at cars right now?

Approximately ten per cent of lead production is to be found in cars, but also cadmium, chromium, mercury and other very dangerous substances.
I could be in that car he bombs.
Okay. I'll be in the car.
People will be in cars, cursing his name.
He even knew you and me would be in this car.
I'm supposed to be in car 564.
Clean fuels allow modern technology to be used in car engines, which will likewise lead to a substantial reduction in fuel consumption.
Keith wasn't supposed to be in the car.