I drive a car that could be called a microcar. I've thought about putting a loud muffler on it to make it louder and more present on the road. I'm not really much of a car guy so it's been a pipe dream for over a decade.
It's just that the blind spots on most vans and trucks are the size of a garage I could comfortably park my car in. Factor in people being less attentive and the only blind spot I'm comfortable being in is right in front of everyone. I could tape my horn down and call it a day but I feel that would be too aggressive.