Border tunnels were in the news Thursday as they were being shut down; only one was a good thing. On the Mexican border, border patrol folks found a smuggler tunnel into San Luis, AZ. Another tunnel was found in Tijuana, but it hadn't been completed under into the US.
On the northern border, another tunnel was shut down, but in that case, it was the Detroit-Windsor tunnel. It was shut down Thursday due to a bomb threat. That border crossing has a single bridge, the Ambassador, that got the extra traffic this afternoon.
The owners of the Ambassador have been fighting tooth and nail to keep a second rival bridge from being built, running attack ads on the bridge and its backers and financing a referendum drive on the new bridge; Canada has pledged to pick up the tab for the bridge, but the fear of rising taxes to pay for it is played up in the ads.
Despite my dig at the Ambassador folks yesterday, even they wouldn't go to that lengths to get extra business. However, this situation points out the need for some backup on that busy border crossing, where a lot of car parts come and go across the border.