wow at the first video
but that into a solid wall, i would like to see it into another car at that speed..
Believe you me the common things that people hit at that speed are just as solid as that brick wall.
For instance the pillars of bridges on dual carriageways or parked articulated lorries in lay by's. Neither of them budge an inch when you hit them in a car. Although they have a slightly different effect due to surface area but the same inevitable end.
However i would think even at 70mph in a focus of that age you would be doing well against that brick wall to survive.