Panel 1: Elly reminds us that Gord and Mike reversed all the way cross the street and could have been killed before asking what they were thinking. Good thing for her a cop doesn't show up asking what she was thinking for leaving the keys in the ignition like a moron.
Panel 2: Gordon babbles feebly about wanting to hear the engine and antagonizes aprilp_katje by referring to the station wagon as a 'she' when he talks about panicking and stepping on the gas pedal instead of the brake.
Panel 3: Mike is stupid enough to think that Gordon's not denting anything makes the two of them lucky.
Panel 4: This is because he isn't Gordon who's staring at Elly who's scowling at him like she wishes she had heat vision and could do to him what Justice Lord Superman does to supervillains; this causes him to thought-bubble 'Not.'
Summary: Mike is going to get arbitrary weird punishment because Elly doesn't know how to discipline children. Gordon is going to get a black eye because Elly thinks other parents do the same.