New Jersey authorities are looking into reports that two state police troopers recently escorted a caravan of high-speed luxury sports cars traveling on the Garden State Parkway at more than 100 m.p.h. The Star-Ledger of Newark, citing public complaints it obtained and interviews it conducted, reported that the high-speed escort was under way March 30 in the highway's southbound lanes. Witnesses told the newspaper state police patrol cars with emergency lights flashing were in front of and behind the caravan. They saw dozens of cars overall, including Porsches, Lamborghinis, Ferraris, and all the vehicles' license plates were reportedly covered with tape. The witnesses said many drivers struggled to get out of the caravan's way, including one who almost ended up in a ditch. Michael Drewniak, a spokesman for Gov. Christie, told the newspaper authorities would take swift action once the investigation is complete.