for me its a question of why is toyota being so tight fisted spending money,if you look around you can buy a better camera system for relatively no money at all and if this technology is so inexpensive then there is no reason why toyota with their buying power couldn't have the lines on the camera.the system for very little extra money,in the post above the system cost £35'ish that included the camera ,wiring and mirror. i am sure the toyota camera could be changed as you will only need a vga conection,+12v & -12v so not a big job to do.