While there was plenty of excitement on the track at this year's 99th running of the Indy 500, there was certainly no shortage of things going on in the pits and around it.
Welcome to the Indy 500, arguably the most historic car race in the world.
Before the race kicked off on Sunday, VIPs and celebrities got the chance to walk the pits at the Indianapolis
Motor Speedway and see the cars up close. Here, a recently-retired David Letterman is seen surveying the action.
Cars are pushed out to their pit spots for final tweaks before being rolled out onto to race course for a rolling start.
Carlos Munoz's Andretti Autosport sits in the pits, waiting for the race to begin.
The atmosphere is somewhat relaxed before the race, but there's still plenty going on.
Some final checks are flagged to make sure they take place before the cars roll out for the final time.
A look inside the cockpit of a modern Indy car. Carbon fiber and buttons galore.
A view from the grandstands of the starting lineup, just before they roll out.
One lucky fan got a very privileged ride in a two-seater Indy car, with legend Mario Andretti at the wheel.
Sponsors came from all walks of business, including Susan G. Komen for the Cure.
A set of tires getting ready for a pit stop.
This is the fuel rig, used multiple times throughout the race to fill up the tanks in the cars. All Indy cars burn ethanol, not gasoline.
A set of tires pulled from Tony Kanaan's car after seeing about 35 laps of action. They were swapped for a full new set in seconds.
A shot of the finish, where Juan Pablo Montoya crossed the line to take his second Indy 500 victory.
Montoya piled into the back of a Chevrolet Camaro with his entire family to take his victory lap after winning the race.
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