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Harbinger Expands EV Platform Into Ambulances With Frazer Deal

Trucking startup Harbinger is accelerating its market diversification by extending its state-of-the-art electric vehicle platform into the emergency services sector. In a strategic move, the company has secured a new agreement with the venerable emergency vehicle manufacturer Frazer to integrate its flexible chassis design into ambulances and larger mobile healthcare units.

Strategic Expansion Into Critical Services

Agreement marks Harbinger’s entry into the emergency services segment. The company is extending its platform to use cases beyond logistics and last-mile delivery. Electric and hybrid systems are gaining adoption in specialized vehicle categories. Shift comes as manufacturers adjust to changes in the U.S. vehicle market.

Innovative Platform Underpins Versatility

At the core of Harbinger’s breakthrough is its revolutionary chassis platform. As explained by co-founder and CEO John Harris in an exclusive interview, the design offers significant adaptability. Capable of being resized to fit varying customer requirements and customizable with an optional combustion engine for added range, the platform now powers products ranging from RVs produced with THOR Industries to FedEx delivery vans, small box trucks, and the recently announced ambulances.

Energy Storage And Efficiency Gains

The Frazer said the hybrid system reduces the total cost of ownership and improves vehicle uptime. Target users include municipalities, emergency services and healthcare providers. Vehicles use battery-based auxiliary power units instead of traditional generators. The system supports medical equipment without relying on the main engine.

Driving The Future Of Mobility

Harbinger said its platform maintains about 99.5% part commonality across configurations. Standardization supports production efficiency and scalability. The company is targeting sectors such as ambulances, where demand is driven by operational requirements and regulatory changes. California regulations on gas generators are accelerating the adoption of alternative power systems.

OpenAI Brings Unlimited Text Chats To Free ChatGPT Users

Unlimited Text Conversations Roll Out

OpenAI is removing limits on text-based conversations for all ChatGPT users, following the platform’s recent milestone of surpassing one billion weekly users.

The update introduces GPT-5.6 Luna as the default model for Free and Go users, replacing GPT-5.5.

New “Think” Button For More Complex Questions

Alongside unlimited text chats, Free and Go users will gain access to a new “Think” button, allowing them to use additional reasoning power for more complex queries.

OpenAI noted that separate usage limits will continue to apply to file uploads, image generation, voice features and other multimodal tools.

Faster Responses For Paid Subscribers

The update also brings improvements for ChatGPT Plus and Pro subscribers. They will receive access to GPT-5.6 Sol, an upgraded model designed for everyday tasks such as web research, planning, writing, decision-making and answering questions. According to OpenAI, the model delivers shorter, more robust responses.

The company noted that this version is separate from the GPT-5.6 Sol model used in Codex and Work, which remains unchanged. Plus and Pro subscribers will also receive a new thinking slider, allowing them to adjust how much reasoning the model applies before generating an answer, depending on the complexity of the task.

OpenAI Reports Fewer Errors

According to OpenAI’s internal testing, GPT-5.6 Luna produces 62% fewer factual errors than GPT-5.5 Instant, while GPT-5.6 Sol reduces factual errors by 68%.

The updated GPT-5.6 Sol model is available to Plus and Pro users starting today. The remaining features for Free and Go users will roll out throughout the week, with unlimited text chats and the new Think button becoming available next week.

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