Uber serge posted about this a few weeks back so I contacted the Company. Karaoke mic was totally free $0 no cost at all. Just have to send screen shot that shows you are actively driving. Doesn't matter how many hours you drive. They send the mic immediately, came in a few days. You can sign up with their affilate company which you will then receive a code. Every mic that is purchased with your code you will receive $10 and buyer gets 10% off. I believe they are $60. Connects to your radio via bluetooth or a bluetooth speaker.
Plastic pouch that has info and your code on it you can hang over backseat.
Back of pouch that has little adverstisements that passengers can take with your code on it.
4 rides I used it on 3 out of 4 tipped for total of $27.00 in tips. All were rides under 15 min. If anyone interested just reply to post and I'll post the info so drivers can get their free mic. It cant hurt can only increase your tips and get those wonderful 5 stars will all crave. Lol