Step 1: Check automobile industry hubs.
- Dharwad (Karnataka): Known for Tata Motors and Toyota plants nearby (Hubli–Dharwad belt has automobile manufacturing).
- Lucknow (Uttar Pradesh): Tata Motors has a significant bus and truck manufacturing unit in Lucknow.
- Jamshedpur (Jharkhand): Famous as Tata Motors’ hub for trucks, buses, and heavy vehicles.
- Pithampur (Madhya Pradesh): Called the “Detroit of India (Central region),” with several automobile industries including Eicher, Volvo, and Force Motors.
Step 2: Eliminate the odd one.
- Itanagar (Arunachal Pradesh): Capital of Arunachal Pradesh, but not known for any automobile industry hub.
\[
\boxed{\text{Itanagar is not related to the automobile industry.}}
\]