I have been reading your blog and it is so kind of you to share all sorts of things here. Thank you in advance as it helps much with my trip to hokkaido. I am going Hokkaido again but this time during Jan/Feb 2016. I am planning to drive as you gave me the confidence to do so after reading your feedback. I have a few questions regarding driving in Hokkaido. What the difference between HEP and ETC? And I am planning to rent from Nissan Rent A Car, but there is no option stated there for me to request for HEP or ETC in advance although I am planning to rent the car from New Chitose Airport outlet which actually provides HEP. Is it possible to rent the HEP/ETC even after renting the car?