We will be staying near Carlsbad in July and want to go to DL for the day. Is there a carpool lane (we have 5 persons) to take from SD to DL? where do we get on the carpool lane? what is the exit for DL? About how long on a weekday in mid-late July @ in the AM? Is it better to wait until 9am to drive? what time do carpool lanes switch/close? How about coming home in the PM? I anticipate it would be late evening or night (say 8-11pm)? Also, we do not have a pass for tolls. Can we pay cash? We will be in SD area for a week with a rental car. Should we just get the auto pass option from the rental agency ($15 for the week)? We will be flying to/fromLAX. thanks, Elaine