GamePro has a good preview of Grand Theft Auto IV:
6:30 am. Niko peers around Star Junction, Liberty City's adaptation of Times Square. The constant honking of car horns and growling engines make Star Junction's ambiance seem all too real.
It's early, but Niko needs a bite. A nearby hot dog stand does the job, the quick meal increasing his health, enough for the big job ahead. In GTAIV, health is recovered with food and drink, waving goodbye to the floating health "hearts" of past.