a man named richard hollingshead ... nailedwo sheets between two trees ...ropped up a kodak movie projector on the hood of his car ... later that year he was given a u.s. patent for his invention ... opened a year later ... off of route 30 ... in camden, new jersey ... and charged 25 cents per car ... and an additional 25 cents perperson ... beware" ... starring adolphe menjou ... the inaugural drive-in theater only operated for another three years ... but by that time ... hollingshead's creation was catching on across the country ... welcome to our drive-in theater." the biggest hurdle for early drive-ins ... was the sound ... the original had speakers buil' others experimented with a row of speakers in front of the cars ... but in 1941 ... r-c-a introduced in-car speakers ... a monumental feature ... drive-in theaters were ateak.. favorite, ice cold, tasty and thirst quenching. and hot dogs, showtime." showtime." thousand drive-in theaters... but that boom would be short- lived ... the rise of home entertainment ... and soaring land prices ...oth hit atten