[TL;DR] Selling a Car in Houston.md

WiP: Distilled from https://www.txdmv.gov/motorists/buying-or-selling-a-vehicle and common sense.

1. Seller: Secure the Payment
   1. only accept cash, cashier’s check, or money order
   2. only accept full payment
   3. provide the buyer with a bill of sale, with the words “paid in full” written on it
2. Seller: Transfer the Title (within 30 days):
   1. fill out transfer section on title
   2. fill out title transfer form from the county
   3. submit "b" and "c" to county office
3. Buyer: …