I'm the complete opposite - I find the mustache extremely gaudy and is the main reason why I prefer Sidecar/UberX (I find the drivers with Sidecar similarly friendly and interesting, and UberX more professional).

I guess that seems somewhat trite in retrospect, but for some reason I feel like I'm getting in a clown car when I use Lyft.

I've heard that a few times and I totally understand how that can be the case. For me it's dependent on where I'm going. Classy party? Uber. Friend's house or home from work? Lyft.

Does anyone even see what car you arrive in to these things?

Usually not. I haven't been going to red carpet things lately </sarcasm>

I wanted to be a Lyft driver, but they don't allow 2 door vehicles (I drive an Infiniti G37). I have a passenger seat that constantly goes to waste because of it (I drive throughout downtown Chicago, as well as in the suburbs).

I agree though, its a cultural thing. Uber is about a monetary transaction, and Lyft is about creating a shared commons from private ownership.

Lyft makes cities better. Sucks they don't let you be a drive with a two-door. Any idea why?

We called a sidecar for my 6'4" 250lb friend who was borderline blackout drunk, and were very amused when we had to help him into the Mazda Miata that arrived. Funny, but not ideal.

This sentiment sets off red flags for me. If people assume that cars with a pink mustaches are safe, it will be that much easier for somebody to take advantage of a false sense of security.