In 1973, we had a similar "problem" w/ our 63 Split Window. Round 4: 
Threw a softball sized rock thru passenger windshield; extracted keys. $12 
for a replacement winshield at the wrecking yard.

On 16 Aug 1996, Jeff Carver wrote:

> A tale of the formidable opponent that the bus is against a well 
> equipped lockmithing foe.
> A friend locked her keys inside her '78 VW Westi.
> I stayed around to watch the show.
>   
> Round 1 - 
> A locksmith came out and in the first round attempted 
> to gain entrance through a wing window using a special tool that 
> looked like an ice pick that had been run through blender.  It had 
> lots of bends and angles that allowed it to be fed between the glass 
> and rubber to engage the catch on the wing handle and then rotate the 
> handle to open the wing.  Tool broke.
> Score after the first round.  VW 1 : Locksmith 0
> Round 2 -
> Locksmith proceeded to try again with a another similar tool. See 
> round one for the action.
> Score after the second round.  VW 2 : Locksmith 0
> Round 3 -
> Locksmith proceeded to attempt to pick lock on driver's door.  After 
> about 15 minutes of valiant effort, the locksmith finally gave up and 
> asked what window he could break.
> Score after the third round.  VW 3 : Locksmith 0
> Round 4 -
> I told him that all of the locks on the bus have considerable 
> resistance to turning, except the rear hatch. We went to the aft end 
> and proceeded to attempt the entry.  Considerably exhausted, or was 
> that disgusted, he tried in vain to pick the lock.  With assistance 
> from the author (doing the rotate thing) while he did the raking 
> thing we finally managed to unlock the hatch.
> Final score.  VW 3: Locksmith 1
> 
> Lessons learned:
> 1 - Keep a hide-a-key somewhere.
> 2 - If you MUST have  locksmith pick their way into a bus, go 
> straight to the end of the line, or aft of the bus anyway.
> - Jeff
> '80 Westi, '67 Sqbk, '64 Ford Crewcab, '87 Subaru 4WD
> Grass Valley, California
>