Physics is a Bitch
No matter how good the design is and how many air bags there are, physics is a bitch when a 5,192 lb SUV goes head-on against a 2,000 lb subcompact.
Here's a train wreck:
[ame="http://www.youtube.com/watch?v=he6TL15pJtw&feature=related"]YouTube - IIHS Crash Test Of Mercedes C300 Versus Smart ForTwo[/ame]
And with a weight disparity of only 3,262 lb of Camry vs. 2,311 lb for the Yaris, this Yaris gets toasted--look at the passenger compartment "disintegrate" as the IIHS spokesperson says in another video.
[ame="http://www.youtube.com/watch?v=vcTf78b8WfY&feature=related"]YouTube - IIHS Crash Test Of Toyota Camry Versus Toyota Yaris[/ame]