Yearlong Caterpillar exhibit features 1st tractor off line 

PEORIA, Ill. (AP) — An exhibit of antique machinery on display at the Caterpillar Visitors Center in Illinois includes the very first Cat to roll off the line. The fully functional tractor carries the serial number “EXP 0000-L.” The Peoria Journal Star reports that the marking indicates the first vehicle off the California production line in 1925. It and other pieces at the museum in Peoria are on loan from Matt Veerkamp.