alan ganz is listed in the guiness book of world records as having the longest career as an ice cream man. >> the world record was 48. of course when they won it, it was 67 years. i broke my own record. this is now my 68th year. reporter: he has had other full-time jobs but on boston's north shore, he and his truck are as much a part of summer as red sox and green grass. >> i started when i was ten years old. my dad was the man. i just enjoyed working with my dad. i've stayed in the ice cream business ever since. reporter: not that it's easy work. he is up at 5:00 a.m. to get supplies which he keeps in his backyard freezer. work. >> my wife makes me a sandwich everyday. snack. peanut butter crackers. i survive and cheat once in a while and eat an ice cream. i won't tell the wife that. she might see that now. reporter: she might. with a kiss good-bye, ganz is off until 9:00 at night. how much ground do you cover in the course of a day. >> anywhere between 60-70 miles a day. reporter: while the years and the miles and the records are all clear and countable, what's harder to convey is t