Like a Coomer, but for cars. A person who likes cars too much and says shit like "Oh yeah that's a V8 Super, it has 230 Horsepower" when no one really asked. Always puts cars on his story.
Vroomer: "Oh yeah that's a V8 Super, it has 230 Horsepower"
Me: "Did I ask"
Vroomer: "Dude how do you not know G8 SuperX from Honda"
Me: "Okay Vroomer"
When someone speeds and make it known they are speeding by having an unnecessarily loud engine. They like to speed when there is traffic and anywhere other than a highway.
Jill: *Sees someone speed while in traffic* Look at that stupid, Vroomer.
An automobile enthusiast that won't accept a vehicle that doesn't emit noise even if its performance is increased by omitting it. Very similar in attitude to a boomer, and may actually be both simultaneously.