Stick a biketrac in a metal box, how's it going to relay it's position in real-time??
It will likely also be using an embedded sim card and relaying on mobile network coverage to transmit location.
1) No system is perfect.
2) They recovered an RR in depot of storage units. The police gave them 3 attempts to open the right container, they needed just 1. The Bike reported it's location via CELL towers. Then blipped just once on the exit of the van and into the storage unit.