-- From the "P" (Parking) position, with my foot holding down the brake pedal, I shift to the "D4" (Drive) position. After a short delay (0.3 - 0.8 seconds), my vehicle twitches very slowly forward, then .3-.8 seconds later, it twitches a little stronger forward. I wouldn't say it is a big jerk. But I thought it would twitch forward at the same speed the entire time. Is my car behaving normally? Or is there a problem? If it is a problem, how do I fix it? Any help is appreciated, thanks!