There are no sirens or street closings here, no sign at all of Super Bowl XLVI, which takes place Sunday in Indianapolis, about 80 miles of pitted highway west of the grain elevators and gun shops that dot this part of the Hoosier State. Still, the proud few who live in this tiny, rust-belt railroad town are Bostonians, and for them the excitement of watching the Patriots play in another Super Bowl must be palpable, right?