In my feeble opinion, I think they just want them back for liability reasons.
Say you use an old one, to try and save a life. It does not work, so you sue Kiddi.
Got two new ones and they ride right next to the old ones as backup.

Don


Of all the things I've lost in my life, I miss my mind the most!

1967 GMC 9500 Fire Ladder Truck
"The Flag Pole"
In the Stovebolt Gallery
More pix on Photobucket
'46 2-Ton grain truck
'48 3/4-ton grain truck
'50 2-ton flatbed
'54 Pontiac Straight Eight
'70 American LaFrance pumper fire truck.