First, glad to hear that you and your 'other' bike are OK and didn't get too much roadrash. :shock:Pegasus said:
The comment by the repair shop stating the tyre had "wear around the edges" makes me wonder if the dealer sold you a bike that was older than an '05 (or the wheels were). Unless it was sold as a "demo" model, the tyres should not have any wear. Personally, I would take the bike back to the dealer and ask them to do a complete "safety" inspection of the bike. A blowout on the first ride indicates there likely was dry rot on the tube, and the heat generated from your extended ride was enough to completely blow it. If he is a good dealer, at minimum I suspect he will replace the other tube for free, check the tyres and replace them if they show ANY wear or dry rot, check the brake pads for glazing & hardening, and replace the brake/derailleur handles.
If you haven't already, purchase a spare tube AND patch kit, tyre spoons, and a tyre pump that attaches to the frame of the bike. The other parts will fit in a small bag that attaaches under or immediately behind the seat. You now will have the technology to change your own tube and repair the tyre in a pinch. 8)