Elon Musk becomes world’s fourth richest man on Tesla boom

Inventor now worth $90bn, trailing Mark Zuckerberg, Bill Gates and Jeff Bezos

City of London tightens rules on skyscrapers over wind tunnel fears

Developers will have to modify designs deemed likely to affect cyclists and pedestrians

Bloodhound 1,000mph car hits skids as project enters administration

Appeal for £25m investment to rescue British team’s plan to break land speed record

Hybrid cars to be exempt from 2040 petrol and diesel ban

Move angers environmental campaigners but is welcomed by automotive industry

Eurostar pulls out all the stops with luxury Paris lounge

Train operator hopes new facilities at its Gare du Nord terminal will stop ticket sales falling off a post-Brexit cliff