The film's themes of redemption and forgiveness are deeply intertwined with its exploration of masculinity and identity. Alvin's prosthetic leg serves as a powerful symbol of his vulnerability and mortality, while his relationship with Lyle represents a longing for connection and understanding.

The heart of The Straight Story is Richard Farnsworth’s performance. At 79, Farnsworth was dying of metastatic prostate cancer that had spread to his bones. He was in constant, excruciating pain during the shoot. Yet, on screen, he projects a stillness and weathered integrity that is impossible to fake. His Alvin is not a charming, Hollywood-old coot; he is proud, stubborn, physically frail, and burdened by decades of unspoken guilt.