Activate Salvaging Station by tapping it, returning The Last Ride from your graveyard to the battlefield.
When The Last Ride enters, Kolodin triggers, causing The Last Ride to become an artifact creature until end of turn.
Activate Ashnod's Altar by sacrificing The Last Ride.
When The Last Ride dies, Salvaging Station triggers, untapping Salvaging Station.
Repeat.
This clever loop turns the graveyard into a bustling engine by utilizing Salvaging Station as our recursive heart, pulling The Last Ride straight back to the battlefield over and over. Thanks to Kolodin, Triumph Caster, that arriving Vehicle instantly animates into an artifact creature, allowing Ashnod's Altar to immediately sacrifice it for two colorless mana while feeding the Station's untap trigger upon death.