Hello - I am an Indian citizen working with a Work Permit in Canada in the Toronto area. I have a business visa (B1/B2) for visiting the US. I generally go to the Boston area. Does anyone know if i can drive to Boston from Toronto and what documents would be needed? Do i need to call the Border Check Post in US (and/or Canada on my way back) in advance to let them know that i will be coming with a rental car?