Before the Delhi–Dehradun Expressway, a Friday-evening drive from Delhi to the Doon Valley was a five-to-six hour proposition through Meerut and Muzaffarnagar, with traffic that made the journey unpredictable rather than merely long. Unpredictability is what kills second-home demand: a family will tolerate a long drive they can plan around, but not a drive that might take four hours or might take seven.
The expressway replaced that uncertainty with a controlled-access corridor and an elevated wildlife-sensitive stretch through the Shivaliks. The practical effect for Delhi, Gurugram and Noida families driving up most weekends is that Dehradun moved from the "annual holiday" bracket into the "most weekends" bracket. That single reclassification is what turns land near the Ganeshpur exit from an agricultural asset into a residential one, and it is the reason plotted development along this corridor has attracted buyers from Delhi, Gurugram, Noida, Chandigarh and Ludhiana rather than only from Dehradun itself.
Infrastructure of this kind tends to reprice land in stages rather than all at once: first on announcement, again at completion, and then gradually as social infrastructure — schools, hospitals, hotels, retail — follows the traffic. The corridor is currently between the second and third of those stages, which is the phase in which the underlying land has already proved itself but the surrounding amenity has not yet been fully priced in.