Tiger Logistics acquired a new truck for $75,000 in 2008. At the end of 2011, accumulated depreciation on the truck was $25,000. On January 1, 2012, Tiger paid $2,000 for routine service on the truck and $8,000 to overhaul the engine. The engine work is anticipated to extend the useful life of the truck by 5 years.
Calculate the net book value of Tiger's truck immediately after the service and overhaul.