Board Thread:Social and Race Teams Threads/@comment-27048832-20180212173909/@comment-30564429-20180226045712

Actually the air is less dense when the temps are cooler which leads to quicker speed as the car is not cutting through as much friction in the air so the air is slipperier. Take a watch of James May running the Bugatti Veyron to it's max speed on Top Gear, this explains it very scientifically. Also in the real world it is best to gas your car up in the morning or coolest part of the day bcos you get more gas in your tank...it's a science thing I know everyone wants to debate this one haha (yet again a few Top Gear clips on this to include an 800 mile run in an Audi A6 diesel from London to Edinburgh and back on 1 tank of gas).