Soooo... I know buses. I've lived in a big city for 8 years, I've hugely depended on public transportation for most of them. I've taken a lot of buses. I've waited for buses that never came. I've fine-tuned my ears to be able to identify when a bus is coming and roughly how many yards away it is. I used to live on a very busy street. I now live on the ground floor of an apartment where my bedroom windows are 7 feet away from the busy sidewalk, and 20 feet down from a bus stop. I know the sound of a bus.
Also: I've seen Jurassic Park many times in my life. I really wonder how many times. I know it's a lot. I love dinosaurs. I think I know dinosaurs. At least Jurassic Park dinosaurs.
And I'm pretty certain that they used sounds a city bus makes to make the roar of a T-Rex. Someone do some internet research and verify this, will you?
It might be considered annoying to keep hearing buses pass all day, and it might be, if it but were for the T-Rex. I don't hate feeling like there's a T-Rex roaring by several times. Especially because he's not once come in my house to eat me (I hold real still).