This trick is for LEGO Batman 2 featuring Batman and Robin dealing with Lex and The Joker’s vehicle in the mission Chemical Signature.
Citizen in Peril
Get the armored car by jumping down from the roof and save a citizen bullied by two naughty robots on a platform jutting off the rear of the armored car.
Do not worry missing a target when the opening chase stage loops.
Just remember where it is and try to pick it up the next time you pass.
Destroy a billboard.
Destroy another billboard.
Destroy 3 cabs.
Keep searching them parked by the side of the road.
Checkpoint Armored Car
Use heat vision on the back wall where the mechanical arm emerged after the magnet path to the armored car’s second floor comes up.
Open the container housing the Minikit over on the right with the Magnet Suit.
It will drop into the floor.
Then pull it out with magnet power just like you did the metal ball.
Try getting a Flower Bed on the far right wall of the armored cars in the second floor.
Just walk through it like Poison Ivy to get it and smack the robot on the other side.
Use Lexs Deconstructor on the door at the back of the armored car where the Citizen in Peril is.
Bust the covering on the armored cars windshield with heat vision.
Step up the roof to the front end and use the handholds to work your way down to it in order for hanging off armored car’s front bumper.
Minikit now is under the glass dome on the armored cars roof so the one you couldn’t shatter with the Bat Suit for some dumb reason
After the Batplane blows a hole in the cars side, head inside and work your way to the room with the spinning electricity bolts.
Fly up between them and nab the Minikit from underneath.