Edited sentence: " E-Tower locations can be found at numerous locations, including Circle K of Japan.According to a press release from Toyota dated August 28, 2002 "Navigational maps and the on-board terminal's basic software are stored in a Secure Digital (SD) card.Music and games can also be downloaded, and the SD card is compatible with commercially available audio players, digital cameras and PDAs that use SD cards, making it possible to share content such as music files, images and games.The card can be inserted into "E-TOWER" terminals at convenience stores and other locations to download local or new maps or to upgrade the on-board terminal's basic software