T.N.
Or.....a guy also on his way to/from work (you're not the only person out at that time) is having a fight with his gf/wife. He sees she texted him just as he is passing your house. He stops to read and answer the text (as he should), fighting texts need to be answered right now. He waits, oblivious of anything that might be going on in any of the houses on the street for her to answer. She DOES answer, something that TOTALLY pissed him off so he peels out just at the moment your husband walks down the driveway....
I suppose if this was the FIFTH time you saw him there, or you saw weapons on the seat of his car, or he resembled a mug shot you saw at the post office.
Anyway, sure 'alert the neighbors'. And for the record, of course I think neighborhood watch programs are an excellent idea, and I think home wifi security is ALSO a good idea.
:)