as cool as the road bikes may look, an upright flat bar may be a better fit in a high car traffic area. you're likely to be stopping a lot and you'll need to pay extra close attention to cars making sudden lanes changes. this type of attention needs is better served if you're more upright. my son has this bike and I think it would be perfect for your needs if your budget and security for the bike allows.

Specialized Bicycle Components

I do agree with the statement about theft. spend $100 on an old used bike if you think that will be a problem. 1.) it's less likely to be stolen. 2.) if it's stolen you're only out $100.