we were driving down the stretch of interstate 35 which was now called only interstate 35 because , i guess , mr. or mrs. stemmons didnt do enough to earn the double moniker on the whole piece of grey asphalt and it no longer carried the added extra title of interstate 35 east because somewhere about forty-five miles south of waxahachie , interstate 35 east merged with interstate 35 west and became just interstate 35 .