Amazon Canada has a great deal on this Solvit waterproof bench seat cover for pets, now only $22.67, regularly $44.99. I price compared this cover with other online Canadian retailers and couldn't find it for even less than $30, so this is the best price out there.
I got a puppy a few months ago and unfortunately, my poor girl gets very sick in vehicles. I won't gross you out with the details, but I can tell you that you know she's been sick by the awful smell that wafts throughout the vehicle. We've tried a few things to alleviate her motion sickness to no avail. This product interests me very much, because we could belt her in to her own seat and if she does get sick, she won't ruin the fabric. Also, it will protect the car seats from her fur and the mud and dirt she usually tracks around everywhere. Now, if only they made something like this for children, my vehicle would stay squeaky clean.
The cover is made from durable heavy-guage polyester and has a waterproof backing. So, technically it could somewhat help with the kids inevitable spillage of drinks on long (and short) vehicle rides. It is ideal for all vehicles with headrests.
It easily attaches with adjustable straps and stay put devices. The best part: it is fully machine washable.
Shipping is free from Amazon on purchases over $25 (so go and spend another $3 on something else to save yourself some money!).
(Expiry: 12th May 2013)