Mind you, a lot of that swerving may be unintentional...
For example, ever find yourself doing about 70 down the highway while woofing down a value meal, feeling fine about that 48 oz soda in your cup holder/lap because its diet soda. Then it happens, yep, the ol' onion inhaled mysteriously in reverse up your nose, causing instant choking on the diet coke that you're guzzling down at a rate of 4 oz/sec ? No amount of blowing and coughing gets that pesky onion cube out until you successfully bellow the mating call of the now extinct Irish Elk, which got its name due to the near brogue-like sound of it's love lorn calls - or so I've heard.
Then you slow down to 65 as you madly squeegee off the diet coke spray from the inside of your windshield with that credit card that you fished out of your wallet, which you pulled from your back pocket by standing up in your car by tilting your head at a near 90-degree angle after undoing your seatbelt?
