> My wife’s car was $670/month

I assume you mean this was the payment on the loan for the car? Should this not be amortized out to the full lifetime of the car for this sort of calculation though?

> We spent at least an average of $1100+ for car notes, car insurance, gas and maintenance.

Per month?? That seems very high to me. Even if I double my monthly costs, I'm still well under that amount.

All that said, if you did the math and Uber is cheaper for you than owning a car then..not really much to argue with is there?