The portal does not, regrettably, open on top of the roof of a speeding truck (although Angela's engineering mind can appreciate the difficulties involved in trying to precisely target something on top of a moving vehicle). Immediately, battle-context algorithms start to determine the wisest course for dealing with the trucks without damage to life or property. Sky Guard has the rear truck in hand, and Arca-Knight is taking care of another... hang on, there's another girl racing alongside the trucks? Systems tag the unknown persona as neutral - friend or foe not confirmed.
Angela decides that she can spare a moment to check on the police officers in the car before joining in the pursuit. "Hello officers," she says, dashing over top the crashed police cruiser and peeking in the vehicle. "Don't worry, help is here."
She looks for injuries and to see if the police are unconscious or trapped. At the same time, she takes a look at whatever it was the Nine Titans thugs sprayed the vehicle with. Depending on what it was - and what those tankers held - they might have to be extra careful.
Angela will try to discern what the substance being sprayed over the car is.
GCG Angela Expertise: Science: 1D20+15 = +15 = 16
She will also check on the officers. Although, Angela does not have medicine or first aid-related expertises. Here is an unmodified roll in case I need a check for anything.
GCG Angela raw d20: 1D20 =  = 13