Not something I'd apply in the back of a cab, I must say. A stain's not so easy to clean up with a swipe of a finger. Getting it right requires a bit of a steady hand -- potholes are a hindrance. Whoopsie!
This is Maybelline New York Color Sensational Lipstain in Bitten Berry, $9.99. It goes on easily, builds nicely for more intense colour, has a light fruity scent and feels comfortable on lips.
I did not apply it in the back of a cab.
Available at drugstores and mass retailers.