Tesla with smart technology starts to go astray in forest (5)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

T (a derived SI unit, the unit of magnetic flux density- named after Nikolai TESLA [1856 – 1943], Serbian-American engineer, futurist, and inventor) + AI (Artificial Intelligence [smart technology]) + GA (first letters of each of G o and A stray)