I had to deliver some passengers to the Pike Place market in Seattle (ok, a mistake) and had to navigate through a mob of people. When someone tried to back out into me, I used the Model X horn and I thought it was broken. All I got was a wimpy "meep." Is this normal? Should it get louder if I push harder? I tried to really jam on it later, but got the same (almost apologetic) beep--like when stepping on a dog toy in the middle of the night. Surely, this isn't right.