How to plot a Start and Stop point while drawing a line in CartoDB?

My visualization plots a bunch of lines on a map using CartoDB using a Start coordinate and a Stop coordinate.

My data contains geojson formatted coordinates (for each row) I want to show a "Start" and a "Stop" illustrating the start point and the end point.

{"type":"MultiLineString","coordinates":[[[-73.978,40.762],[-73.991,40.75]]]}

where the first coordinate is a start and the next a stop.

Appreciate the help! V