The vehicles were an instant attraction at a Shell fuel station in Westlands, with speculation that "The Beast", a bulletproof limousine that Mr Obama travels in, was one of them.
Vivo Energy, the company that distributes Shell products in Kenya, immediately tweeted pictures of the vehicles being fuelled.
“#TheBeast, Is this is one of the most high profile vehicles to have ever fueled at our Shell service points? Probably," the company posted on its Twitter page.
Here are some of the pictures:
