IMO, and I could be wrong, but the drive from Minn/St Paul, other than the Mall of America in Minneapolis, has nothing of interest until you get to the Badlands, Custer STate Park, Crazy HOrse, Mt Rushmore area. Deadwood SD for a day and night, I found to be of interest.
Sinoatrial node is located at the junction of the superior vena cava with the right atrium.
This normally initiates at the sinoatrial node (1 in the diagram) in the right atrium. Electrical conductance travels across the atrium to the atrioventricular node (2 in the diagram) where it then branches to innervate the left and right ventricles through the bundles of His.