Several new facts came out today that are important for putting together how the murder of Dan Markel went down.
(1) Garcia was wearing a white polo shirt inside the tinted Prius. He was the passenger when Rivera was withdrawing money from an ATM in Pembroke Pines, FL . In one of the videos taken from Star Metro immediately before the murder, you can see his white shirt. Once again, he is the passenger, not the driver. This leads me to think he may have shot Dan with Rivera's silver-finished revolver. We can't be sure 100% but the driver tends to focus on getting away from the scene as quickly as he can, while the passenger is planning how to execute the contracted target. Garcia, however, was the driver the day before at the Ashford Apartments, when a witness spotted the two. So they obviously alternated driving duties. But being a passenger immediately prior to the killing (and after the killing as well) leads me to believe he may have been the shooter rather than Rivera. His white polo shirt is so bright you can see right through the tinted Prius.
(2) Dan had his car window rolled all the way up when he was shot. His black Accord was about 90% inside the garage and was still running. We know from his phone conversation that someone he doesn't recognize was in the driveway. That someone had probably parked right behind him, just outside the garage. Dan may have been alarmed by this (or something else he may have noticed), that he did not roll down the window. Or he may have rolled down and then rolled up, sensing danger. We know there was some kind of muffled exchange. It could have just been, "Are you Dan Markel?" before he was shot twice.
(3) Dan was wearing a red t-shirt when he walked into Premier Fitness. At 5-10 he could not have weighed more than 165 lbs. In other words, it would have been pretty easy to overpower Dan if Garcia and Rivera had found their way in the house on July 17, 2014, when they approached the house from the Ashford Club Apartments. Dan did not change his gym clothes and was probably heading home to take a shower. After finishing his workout, he sits in his black Accord for a while before driving out of the parking lot (you can see that the widely-circulated photo of the green Prius only a week into the shooting was from this fitness center). Dan probably was on the phone at this time with the same guy until he returned home. Talking and driving, he probably didn't have a prayer of noticing the green Prius following him from the West side of Tallahassee, when he dropped off his boys at daycare.
(4) Rivera rented the green Prius at 6:15pm on 7/15/2014, Tuesday evening. He did not start driving to Tallahassee until Wednesday afternoon (7/16) and checked in at a motel on W. Tennessee Street at 1 am on 7/17. According to the rental contract, this was originally supposed to be a 2-day rental (from 7/15 to 7/17). It ended up being a 6-day rental (7/15 to 7/21). Rivera kept the car for 3 more days after driving home from Tallahassee. According to the newly-released documents, the rental car place used to be called Hybrid Auto Rental Center, specializing in hybrid cars like Prius. It is no longer there and the Web site is gone.