HA! I used to drive my buyers around, but after a couple of customers wanted to see about 35 homes each over a 4 day period, (at 100-135 miles a day) I switched to "I'll meet you at the first house and you can follow me to the others" tatic.
Seemed to work. Got tired following me I guess...
Now I need a smaller 2 door car instead of my 4 door truck!