The sky is not falling, it is not as bad as you think.
If there is no excuse to put others in any danger on the road, you should never, ever, take your own car on the road. Every time anyone drives, there is risk involved.
You're over reacting, chill out. You're not weighing risk rationally. A 12hr strait shot is by no means fun but its not something thats going to significantly deteriorate a driver's ability to the level your post would warrant. An experienced trucker is probably a better driver better than you in his sleep.