This may all be related to that rear engine mount. The exhaust pipe broke off because of two reasons
1)It's old and rusty
2) the exhaust is now flexing a lot more than it should because you have bad mount(s)
Now, the speedometer issue is most likely the VSS (vehicle speed sensor) or because the engine is moving so much, it may be a loose connection or rubbing wire.
Friday, June 12th, 2009 AT 5:02 PM