Happy July 4th!

The train has reached its final destination, I will now be closing this.

Happy 4th of July to all the Americans out there, may you have a great day and may it continue throughout the week.

In celebration there is a long train coming up but first we need to find where its starting.
the grid below will start you on your short path just follow the directions.
b1,a3,c2,d3,a5,c4,e1,c3

old cars have switched out and 5 new ones have been added!
some more cars will switch out soon with 7 more then its onward to the last stop!

Short bonus added ended

View attached image.