Granted this is a weird one, but I had one chance for this shot due to oncoming traffic.
A big concrete pour in downtown Halifax with half a dozen transit mixers stacked up on two streets, and a small gaggle of pre-school truck watchers hove into view and I had to get the picture!
Osco (Ocean Steel and Concrete) were running this fine Western Star twin steer with London mixer. Bedford Redi-Mix had a classic R model Mack following, but this was the shot. Clear road behind, but lots of oncoming traffic, including a police car, resulted in this quick grab.