UberX launched in Baltimore in October 2013 with "rider zero" Tyrod Taylor of the Baltimore Ravens.

Uber, the ridesharing service that launched in Baltimore in early 2013, introduced its uberX service to Baltimore this week with “rider zero” and Baltimore Ravens back-up quarterback Tyrod Taylor.
The base fare for a ride in uberX vehicles, which are hybrid and mid-size cars, is $3, whereas the base fares for the black cars and SUVs Uber typically uses are $7 and $14, respectively.