I am planning an EV project for my momma (who's scared of the motorway), and just wanted to get some more informed opinions on whether the battery I'm looking at will be big enough. She drives maybe 30 miles a day, all on surface streets, and lives in Seattle (some hills but nothing crazy). Does a 72V, 100AH, battery pack sound like it would work for her? Or should I look for something higher voltage, or greater capacity, or both? Thanks in advance.