Where does the overflow hose go to on a 94 Cadillac Seville STS?

The overflow hose on a 1994 Cadillac Seville STS goes to the reservoir for the coolant recovery system. It doesn't go directly to the ground or another part of the engine. The overflow hose allows excess coolant, that expands when heated, to be diverted to this reservoir instead of potentially pressurizing and damaging the system.