I have a 2008 Sienna. I have problems entering the van and hitting my right knee on the bottom of the steering column just about every time I get in. That is with the seat all the way back and as low it can go. I am not that tall, 5’10 with relatively short legs (31″ inseam). The steering column is raised enough to keep all the gauges in full view. Once seated everything is comfortable, except the right arm rest. It is too short and curved awkward for the length of my arm. I don’t know how the new design is for 2010. I am not sure if the 2008 and 2009 are the same design.
Just as a note, I did test drive a Dodge Charger a while back and put the seat all the way back. I could barely touch the pedals. I could also sit comfortably in the back seat with the seat all the way back. I can do that in very few cars.