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A Model 3 purchased in 2017 now has access to features that didn't exist when it was built
– Sentry Mode
– Dashcam Viewer
– Automatic blind-spot camera
– Dog Mode
– Trip Planner via the Tesla app

– Battery preconditioning for faster Supercharging
– Expanded entertainment (Netflix, YouTube, ...) & music options (Spotify, Apple Music, ...)

All provided free through software updates