LEGO Mighty Micros DC & Marvel 2016

As for the mini vehicles, it's compact and very minimalist:

76061: Batman has a black and yellow mini-Batmobile equipped with a grapple launcher, Catwoman walks in a black and purple mini-kart with a cat tail on the back. In the box, a carton of milk, a diamond, a batarang.

76062: Bane has a vehicle with a conical drilling attachment in the front, Robin drives a red and green mini-kart. Robin is equipped with a red grapple launcher.

76063: Captain Cold drives a blue snow plow with a yellow surfboard on the front as an accessory to push snow, Flash drives a red mini-kart with flames coming out of the rear exhausts. In the box, an ice cream cone with scoops (white) and a "cooling" gun for Captain Cold.

76064: Green Goblin drives a green and orange rolling contraption fitted with two wings on the sides, Spider-Man's mini-kart is blue and red and it is also a mini-helicopter with one propeller and two flick fire missiles. In the box, a green vial, a pad-printed pumpkin (head).

76065: Red Skull flies a black and red craft with integrated detachable missile and Captain America drives what looks from a distance like a mini version of the Hydra craft seen in set 76017 Captain America vs. Hydra. In the box, Captain America's shield and a translucent cube for Red Skull.

76066: Ultron has a red and gray mini-kart, Hulk has a white and purple quad with two oversized green hands (those of the maxifig already available) in the front. Ultron throws an adjustable wrench (!) At Hulk. Hulk throws a chicken thigh (!!) at Ultron.