Paying for Uber rides does not include paying for new roads. DC traffic is bad enough they need higher density options. If that's busses with dedicated right of way, or street cars with dedicated lanes, or new subway stations they need to do something that people will actually use.
PS: I don't live in DC in large part due to traffic issues, but also giving up the right to vote bothers me deeply. So, this is from someone that lives close to, but not in DC.
Paying for rail doesn't do anything to alleviate the need to pay for roads though. The comparison really is paying for trolley vs paying for Uber (or whatever)
Rail is only useful in certain situations and it's only useful if done correctly. Neither of these things are happening in this case.
And don't worry about your vote. It's really irrelevant. It's really about making you feel like you have a voice then actually you having a voice.
PS: I don't live in DC in large part due to traffic issues, but also giving up the right to vote bothers me deeply. So, this is from someone that lives close to, but not in DC.