Held every May on the Indiana State Fairgrounds the week before the Indy 500, Dana Mecum’s Original Spring Classic has grown into one of the largest muscle car auctions in the country. Its 30th anniversary sale set a then-record $55.6 million across 1,208 cars sold, headlined by a $1.45 million Porsche and a Vault Find Corvette that drew a moment of silence for its late owner. Less than a decade later, the same event was moving over three times that much money.