What is 270?
1.
A car that doesn't have air conditioning so the front windows are down and the driver goes 70 miles per hour to providing cooling for all occupants.
The driver of the old car was accustomed to the 270 air conditioning system.
See
2.
An interstate in Maryland that can get backed up at any time even though it is 6 lanes on each side at one point.
It's a miracle, no traffic!
3.
a 180º turn with a 90º turn...270
