Filming the whole incident on his phone, Ken watched as officials tried to keep the boy calm as they attempted to jimmy the door.
Firefighters were forced to act fast when, after 30 minutes, the boy became drenched in his own sweat.
"Well the next thing that's going to happen is he's going to be passed out and we don't want that," the firefighter said.
They had to break a window in the rear of the family's SUV, quickly grabbing the boy from inside the vehicle.
Examined by paramedics, the boy appeared to be uninjured.
And while extremely grateful to the police and firefighters who helped them, Apollo's parents hope their story serves as a testimony to the dangers of leaving a child in an automobile unattended.
"Orlando Police Department and fire department both showed up right away on the spot and helped us out, so we're very grateful they were there to help us and they're our heroes for the day," Ken Rubin said.