I have never seen more than a handful of people in the taxi line.
Sorry, but I would rather pay the $8 taxi fare for the 25 minute ride than $110 for the hotel car.
Uber Select in a Mercedes for less than $8
. Seriously, my 2km Uber ride within District 1 last month was 30K VND. I liked it so much, I asked the driver to come back the next day to take me to the airport for 150K VND or ~$6.5.