Ok Randy, there is NO WAY In N Out is even remotely as greasy as White Castle, and you like them over In N Out? Truly something in your childhood has affected your tastebuds. The In N out on Tropicana has been there for years and years and years, and yes 'Koast it is way bigger than a typical one and ALWAYS wall to wall people, but it is still good IMO.
Oh and BTW Randy just curious, clarify the location of the In N Out you ate at? The one on Tropicana was the first one outside of California, and there is no I-35 in Nevada. I-15, the I-215 and I-515 belts are the only parts of the Interstate that run through or around Las Vegas. I-35 runs through Minnesota, Iowa, Missouri, Kansas, Oklahoma, and Texas.