OK, this is officially weird. I basically don't get car sick and on a normal drive to work, everything is fine.
However if I have to drive in a snow storm and only get to do around 30mph as opposed to the "normal" 45-50mph, I arrive feeling sick with the same symptoms I had when a rented Mustang was drawing exhaust fumes into the cabin - ie, nausea, headache and generally feeling unwell. First time this happened this week, I put it down to being a little tired but it happened again last night. Fortunately last night I noticed it quickly and drove home with the window down, which helped. Well, apart from the 20F and snowstorm parts.
I did check for exhaust leaks (none I could find), the trunk seal seems OK and the rear lights (which have recently been changed) seem to seal OK, too. And I can't smell any exhaust fumes in the engine bay, either.
What the cluck? 
fanfoy
New Reader
1/12/13 10:59 a.m.
Star Wars effect? This usually happens mostly at night in a snow storm. It's even worse if you try have fog lights on and the snow flakes are big and fluffy. You unconsciously focus on every snow flake that falls and you end up nauseous.
Hmm. That makes a depressing amount of sense because it only happened in the dark so far.
Take a digital CO meter that has a battery backup out for a ride.
^^^ Thats a good idea, if there is exhaust in the cabin, you definitely want to know about it.
As for sickness/headaches caused by the effect of the snow on your eyes, try driving with some yellow or amber tinted safety or shooting glasses. My eyes get tired quickly when driving in poor visibly conditions, and I have found the yellow tint helps a lot. I keep a pair just for driving in my work truck and my car. YMMV.
driving in snow storms at night gives me a headache- i don't mind driving in them, but all the falling snowflakes are a bit distracting, especially around these parts where you also have to always be extra vigilant against those 6 foot tall rats with antlers that like to jump out in front of you..
